crypto: msm: Remove lock/unlock APIs used in shared CE HW scenario

This was needed to allow sharing of the CE hardware in cases where
BAM locking mechanism did not function, which is not valid for the
recent targets. So removing the corresponding code from the driver.

Change-Id: Iad617f822be0aa2c0221b95e6eca4f45f2fc931a
Signed-off-by: AnilKumar Chimata <anilc@codeaurora.org>